What is CVE-2026-13939?

CVE-2026-13939 is a low-severity vulnerability in Google Android, classified under Improper Input Validation. CVSS score: 3.1/10. Published 2026-06-30.

How severe is CVE-2026-13939?

Low severity. CVSS v3 base score is 3.1 out of 10.

Improper input validation in Google Android

CVE-2026-13939

Insufficient validation of untrusted input in WebShare in Google Chrome on Android prior to 150.0.7871.47 allowed a remote attacker who had compromised the renderer process to perform UI spoofing via a crafted HTML page. (Chromium security severity: Medium)

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2026-06-30 · last modified 2026-07-02.

CVSS v3 metric

CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (12.8th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 12.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Google Android
Google Chrome — versions 150.0.7871.47

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0175352… (Release Notes, Vendor Advisory)
issues.chromium.org/issues/513149760 (Permissions Required)

Frequently asked questions

What is CVE-2026-13939?: CVE-2026-13939 is a low-severity vulnerability in Google Android, classified under Improper Input Validation. CVSS score: 3.1/10. Published 2026-06-30.
How severe is CVE-2026-13939?: Low severity. CVSS v3 base score is 3.1 out of 10.